EP 4060213 A1 20220921 - FLARE FITTING STRUCTURE AND FLARED TUBING MANUFACTURING METHOD
Title (en)
FLARE FITTING STRUCTURE AND FLARED TUBING MANUFACTURING METHOD
Title (de)
STRUKTUR EINES BÖRDELANSCHLUSSES UND VERFAHREN ZUM HERSTELLEN EINES BÖRDELROHRES
Title (fr)
STRUCTURE DE RACCORD ÉVASÉ ET PROCÉDÉ DE FABRICATION DE TUBE ÉVASÉ
Publication
Application
Priority
- JP 2019206452 A 20191114
- JP 2020042088 W 20201111
Abstract (en)
A flare fitting structure capable of preventing irregularity on a flare inclined plane of a flared tube and maintaining a high seal surface pressure is provided.In a flare fitting structure (1) in which a flared portion (12) that is formed in an end of a flared tube (10) and faces a connected member (2) is pressed by a flared nut (3) to connect the flared tube (10) to the connected member (2), the flared tube (10) is formed by flaring a cylindrical tube (40) including an original tube (41) and a coating layer (42) that coats a surface of the original tube (41), the flared portion (12) includes a flare inclined plane (13) that faces the connected member (2), and the flare inclined plane (13) is formed with a machining portion (43) in which the original tube (41) is exposed by a machining operation.
IPC 8 full level
F16L 13/14 (2006.01); B21D 39/04 (2006.01); B21D 51/16 (2006.01); F16L 19/04 (2006.01)
CPC (source: EP US)
B21D 19/16 (2013.01 - EP); B21D 39/046 (2013.01 - EP); B23P 15/00 (2013.01 - EP); F16L 13/163 (2013.01 - US); F16L 19/0286 (2013.01 - EP); B21D 41/026 (2013.01 - EP); F16L 58/1054 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 4060213 A1 20220921; EP 4060213 A4 20231129; CN 114729717 A 20220708; JP 2021080946 A 20210527; JP 7421908 B2 20240125; US 2022381379 A1 20221201; WO 2021095772 A1 20210520
DOCDB simple family (application)
EP 20888426 A 20201111; CN 202080078482 A 20201111; JP 2019206452 A 20191114; JP 2020042088 W 20201111; US 202017775715 A 20201111